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NOOK Book(eBook)

Overview

Avoid Allergic Outbreaks–Not Animals! Allergic to Pets? addresses the problem that plagues allergic animal lovers everywhere: how to live with a pet you love when you (or a family member) are allergic to it.

Sensitivity to animals is one of the most frequently diagnosed allergies–yet until now, allergic animal lovers have been faced with only two choices: give up their beloved pets or live with the suffering. Finally help is here! Allergic to Pets? is the first book to provide effective advice for cohabiting with cats, dogs, small furry pets, birds, and even horses. Renowned pet expert Shirlee Kalstone explains:

• What causes an allergic reaction and how to ward off the worst of it• How to care for your hairy, furry, and feathered pets (and their environments) to minimize allergens• A room-by-room guide to allergen-proofing your home• When to get professional assistance: medicines for the sufferer as well as nontoxic allergen-reducing products formulated specifically for animals And much more!

Allergic to Pets? is an indispensable resource for animal-loving allergy sufferers everywhere, packed with much-needed advice, explanations, and helpful tips.

Product Details

About the Author

Shirlee Kalstone is an internationally recognized expert on pets for over twenty years, and has published numerous books on pet health care, first aid, grooming, behavior problems and housebreaking, including including How to Housebreak Your Dog in 7 Days (nearly 400,000 copies in print!).

Read an Excerpt

Allergic to Pets?

By Shirlee Kalstone

Random House

Shirlee KalstoneAll right reserved. ISBN: 0553383671

Chapter One

One

Understanding Allergy and Asthma

According to the World Health Organization, allergies are the most widespread chronic condition in the world. There is no question that allergies are a major problem in this country. They are so prevalent that they affect almost every household. A great number of Americans either have allergies or know someone who does. In the United States alone, it is estimated that the number of people who suffer from allergies in one form or another may be as high as 50 percent,1 costing them billions of dollars annually. And some doctors say these figures may be low estimates.

What Is an Allergy?

An allergy is a hypersensitivity or abnormal reaction to something that is ordinarily harmless to most people. Allergic reactions are caused by malfunctions of the immune system, the complex defense system that protects our bodies against invasion by bacteria, viruses, parasites, and other foreign substances or organisms that threaten our health. A multitude of common, otherwise harmless substances can trigger the susceptible immune system to overreact and produce a variety of allergic symptoms depending on the part of the body that is affected.

Allergies can be inherited; if your parents or grandparents have a history of allergic sensitivities, you may develop allergy symptoms. If one parent has allergies, a child has a 20-40 percent chance of developing sensitivities; if both parents are allergic, a 40-60 percent chance. However, even though allergies can run in families, you can inherit just the tendency to be allergic, but not necessarily the same sensitivities that bother your parents. Allergies can also be influenced by a host of factors or conditions, such as geographical location, the time of the year, the climate and humidity, the pets you keep, the furnishings of your home or apartment, your housekeeping habits, what you eat or drink, the products you use, the drugs and medications you take, exercise, indoor and outdoor contaminants, and even your job.

Some allergies occur only at certain times of the year, while others are present all the time. Seasonal allergies coincide with the seasons when trees, grasses, and weeds begin to pollinate. The duration of the season depends on geographic location. Perennial, or year-round, allergies are usually caused by something you come into contact with every day of your life, including animal allergens, mold, and the droppings of dust mites and cockroaches. Since it is possible to be allergic to more than one allergen, many people suffer from both seasonal and perennial allergies.

When Do Allergies Begin?

Allergies usually appear before twenty years of age, and there is a tendency for them to start during early childhood. Young boys are more likely to suffer from allergies than young girls, but the pattern reverses itself in adulthood to affect women more than men. Allergies may change, they may come and go with no regularity, symptoms may wax or wane in intensity, or shift from one part of the body to another as a person progresses through different life stages, but the tendency to be allergic seldom goes away. Many individuals improve as years go on, but some do not.

The Immune System

In her book What's in the Air?, Dr. Gillian Shepherd, clinical associate professor of medicine at Weill Medical College of Cornell University, has a most appropriate description for the human immune system. She calls it our body's "homeland defense system" and likens it to a giant network, similar to a road map showing many different routes, one of which leads to allergies.

Every minute of every day, a myriad of foreign invaders enter our bodies with no detrimental effects. Any foreign substance that causes the immune system to react is called an allergen (doctors also call these "antigens"). Allergens can be taken into our bodies in several different ways: via airborne substances we inhale; by food or drugs we ingest; by vaccines, medicines, and insect stings injected into our bodies; and through substances that come into contact with our skin.

Normally, when an allergen enters the body, the immune system springs into action and produces specifically programmed antibodies known as immunoglobulins to attack and destroy it. There are five different groups of immunoglobulins: IgA, IgD, IgE, IgG, and IgM. Each plays a different role that contributes to the functioning of the immune system. Immunoglobulin E, or IgE, is the antibody responsible for allergic reactions.

Along with IgE, three other types of body cells play a prime role in allergic reactions: mast cells, found in the tissues throughout the body (primarily in the mucous membranes of the respiratory and gastrointestinal tracts) and in the skin; basophils, a type of white cell (or leukocyte) found in the blood; and eosinophils, other special white blood cells.

The Basics of an Allergic Attack

In an allergic person, the immune system learns to respond to one or more innocent foreign substances as if it or they were dangerous to the body. In the case of pets, for instance, the immune system perceives their dander, sebaceous gland, and salivary and urinary extracts as threats. Pet allergens are usually considered airborne allergens (though rashes caused by pet licking and contact dermatitis from pet dander are examples of non-airborne allergic reactions). Along with other inhaled substances such as pollens, mold spores, and the droppings of dust mites and cockroaches, they enter the body via the nose, throat, and lungs. Breathing them in can affect your entire respiratory tract. "For allergens to become capable of being inhaled, they have to be tiny-1 to 5 microns," Dr. Shepherd says. "This means they are a millionth of a meter, or many times smaller than the dot at the end of this sentence."

The first step in the development of an allergic reaction is exposure to an allergen. Suppose, for instance, you have the potential to be allergic to cats. The protein cats produce that causes allergies in humans is called Fel d 1. Studies indicate that the sebaceous glands at the hair roots and the salivary glands are the most potent cat allergen sites. If you are a person destined to be sensitized to cats, when the tiny Fel d 1 protein comes in contact with your nose, lungs, eyes, or skin, your immune system reacts by producing specific IgE antibodies to this foreign substance.

Your initial exposure to the Fel d 1 cat allergen causes the IgE antibodies to bind in great number on the mast cells and basophils-many thousands may collect on a single cell-but you probably won't experience any symptoms. An allergen does not provoke a reaction the first time you encounter it. The immune system is simply gearing up to defend itself against future invasions by that same allergen. At this point, however, you are sensitized to cats.

Sensitization, or the process that leads to development of symptoms in persons intolerant to a particular allergen, requires exposure over a period of time-anywhere from hours, days, months, or years-to develop. Consequently, the second time your body encounters cat allergen (or maybe the tenth time, or the fiftieth time, or even the hundredth time) a sequence of biochemical reactions will occur culminating in the classic symptoms associated with airborne allergies.

When that occurs, and the Fel d 1 comes into contact with the IgE antibody that is produced to react against it, the mast cells and basophils attack the intruder and release a flood of destructive chemicals (the most important being histamine) into the surrounding tissues and bloodstream to trigger inflammation, either locally or systemically.

The union of an allergen and the IgE that takes place on the surface of the two cells is explosive. Several authors, in fact, have likened what happens to an explosion, comparing mast cells and basophils to grenades or land mines, and the IgE antibodies that bind to them to detonators. Depending on the tissue in which the "explosion" occurs, the allergic response differs. If the reaction to Fel d 1 occurs in the nose and throat, the responses can cause immediate swelling, itchiness, sneezing, a runny discharge, nasal congestion, an itchy or scratchy sore throat, and more. A similar reaction occurs in the lining of the eyes causing tearing, intense itching, and swelling. In the lungs, the muscles surrounding the air passages contract to make breathing more difficult, possibly starting the symptoms of asthma. If the reaction occurred from touching the cat, local swelling of the skin, itchiness, hives, or rashes may result.

This is not the end of the scenario, however. A few hours after the initial attack, in what is called the "late-phase reaction," eosinophils and additional basophils accumulate at the allergy site and release a host of inflammatory chemicals that contribute to both the severity of symptoms and the persistence of the attack.

The Cumulative or "Rain Barrel" Effect

Allergies are cumulative. In other words, they build up, and people can have varying sensitivities to different allergens. Every allergic person's immune system has a tolerance level above which symptoms will develop. This is often referred to as the "rain barrel" effect. Basically, when an allergic person's rain barrel is empty or partially filled, there are no allergic symptoms. However, when a combination of allergens, infection, and stress pile up, the rain barrel can fill up and overflow.

Someone who is allergic to a pet, for instance, may have no noticeable symptoms when the total exposure is below his or her tolerance level (the amount of substance or substances needed to provoke a reaction). That person may also have varying degrees of sensitivities to other substances found in and around his environment, such as dust, mold spores, pollens, soaps, cosmetics, and the like.

If a surplus of these allergens collect in the environment to exceed the allergy threshold, his or her rain barrel will overflow and symptoms will pop up. This being the case, while it may be impossible for you to entirely escape the effects of a pet in the house, taking proper precautions to lower environment triggers that are causing problems can significantly improve your tolerance of the pet or pets you live with.

Asthma

Asthma is an inflammatory disease of the lungs that causes airflow limitation and breathing difficulties. It is a serious lung disease that can be very disabling. Asthma may occur at any age, although it is more common in childhood. According to the American Lung Association, asthma is now an epidemic in the United States. In its "Trends in Asthma, Morbidity and Mortality," published in May 2005, the association reports that approximately 25 million Americans have asthma. The disease is responsible for 1.9 million emergency room visits, 12.7 million physician office visits, and about 13 million missed school days per year. As with allergies, genetics may play a role. A person is more likely to develop asthma if he or she has an asthmatic parent. The most common symptoms are wheezing when the sufferer is inhaling (although not all asthmatics wheeze), shortness of breath, and tightness in the chest.

Allergy can trigger asthma, although not all asthmatics are allergic and not all allergic people have asthma. In an attack, the bronchial tubes (the small branches in the lungs) become irritated. Cells release a cascade of histamine, leukotrienes, and other chemicals, causing the bronchial tubes to tighten and swell from the inside. At the same time, the muscles that encircle the outside of the bronchial tubes tighten and may twitch or feel ticklish (in medical terms this is called a bronchospasm), causing the airways to narrow. Mucus and fluids quickly accumulate in the lungs, narrowing the airways even further. This produces the tightness, wheezing, and coughing that are associated with asthma. Breathing more vigorously in an effort to maintain an adequate air supply and coughing up phlegm to relieve congestion can make your chest feel even tighter and make breathing more difficult.

When asthma is triggered by allergy, some of the allergens that are the culprits are the small dander, saliva, and urine particles of animals, bird-feather dust, house dust mites, pollens, and molds. Asthma can also be induced by a host of other causes such as exercise, emotions, cigarette smoke, air pollution, cold weather, foods, strong odors, as well as bacterial and viral respiratory tract infections.

In Conclusion

Now you know a little about allergies in general. If you are looking for additional medical information, the bookstore and library shelves are stocked with books written by allergists and clinical researchers, filled with up-to-the-minute advice about managing allergies and asthma. Some are listed in the Resource Guide.

The rest of this book will zero in on sensitivities to pets: which pets trigger allergies; the allergic symptoms they cause; how to care for dogs, cats, birds, rabbits, and rodents and reduce your exposure to their allergens; plus how to allergen-proof your house to substantially decrease the number of dust mite, mold, pollen, cockroach, and other allergens in the environment. While it's impossible to rid your pet or your home entirely of animal allergens, you can significantly reduce their levels. Dr. William Berger writes in his book, Allergy & Asthma Relief, "No matter what the severity or cause of your condition, researchers have developed outstanding medications to end attacks and prevent new ones from occurring. Just as important, there are many, many things in your power to improve your situation."

Two

Pet-Related Allergic Skin Problems

Contact with any hairy, furry, or feathered animal can trigger allergic skin reactions in sensitive individuals. Skin conditions associated with pet allergens include hives (urticaria), angioedema (very large, swollen hives), atopic dermatitis (eczema), and contact dermatitis. Allergic pet owners can develop any of these by simply touching, fondling, hugging, or kissing their pets, and especially from being licked by their pets. In addition, close contact with dogs and cats that are infested with fleas can cause a skin rash called papular urticaria, which is an allergic reaction to the protein in flea saliva. In this case, you are not only allergic to your pet, but also to the fleas that live within the pet's coat. Here's a brief explanation of these conditions, how the skin reacts from contact with pets, and how doctors treat the symptoms.

Hives and Angioedema

Hives are itchy, red, swollen bumps or welts on the skin that can appear soon after direct contact with a pet. The medical term for them is urticaria. They are always itchy and can also burn or sting.

Continues...

Excerpted from Allergic to Pets? by Shirlee Kalstone Excerpted by permission. All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher. Excerpts are provided by Dial-A-Book Inc. solely for the personal use of visitors to this web site.

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